Method for detecting anomaly satellite in multi-reference stations environment and apparatus using detecting method

PURPOSE: A determination method of an abnormal satellite and a determination apparatus using the same are provided to improve availability, continuity, and an integrity monitoring function by continuously providing a service at the environment excluding abnormal state causes. CONSTITUTION: An abnormal sate determination apparatus(30) comprises a satellite signal receiver(100), a part for determining the number of reference stations(200), an abnormal state detecting part(300), an abnormal satellite identifying part(400), an abnormal satellite checking part(500), and an abnormal cause determination part(600). The satellite signal receiver receives a satellite signal which includes a code measured value and a carrier wave measured value through multiple reference stations. The part for determining the number of reference stations determines the number of reference stations which communicate with a satellite from the satellite signal. The abnormal state detecting part creates an abnormal flag by detecting an error of the satellite from the code measured value and the carrier wave measured value. The abnormal satellite identifying part distinguishes an abnormal satellite based on the abnormal state detected by the abnormal state detecting part. The abnormal cause determination part determines the cause of abnormal state for a checked abnormal satellite. [Reference numerals] (100) Satellite signal receiver; (200) A part for determining the number of reference stations; (300) Abnormal state detecting part; (400) Abnormal satellite identifying part; (500) Abnormal satellite checking part; (600) Abnormal cause determination part